prep2 49 it在比较句中！（非that）

shiwen66666

49.   (27096-!-item-!-188;#058&003405)  
Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture to 1950.  
49.   (27096-!-item-!-188;#058&003405)  
Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture to 1950.  
(A) Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture  
(B) Since 1990 the growth of the global economy has been more than that during 10,000 years, from when agriculture began  
(C) The growth of the global economy since 1990 exceeds that which had been for 10,000 years from the beginning of agriculture  
(D) The growth of the global economy since 1990 exceeds what it has been for 10,000 years, from when agriculture began  
(E) The growth of the global economy since 1990 exceeds what it did for the 10,000 years from the beginning of agriculture  

答案:A

it在这里为什么会对？it不是应该精确指代嘛？我觉得应该用他thar才对。

请解答

cx_ding

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shiwen66666

顶

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AlienX

global economy是永遠存在的

yhwut

自己跟自己比当然用it了。

shiwen66666

自己跟自己比当然用it了。

-- by 会员 yhwut (2009/11/16 7:59:04)

o ，谢谢~

shiwen66666

PREP2-96
There are hopeful signs that we are shifting away from our heavy reliance on fossil fuels:  more than ten times as much energy is generated through wind power now than it was in 1990.

(A) generated through wind power now
   than it was
(B) generated through wind power now
   as it was
(C) generated through wind power now
   as as the case
(D) now generated through wind power as it was
(E) now generated through wind power than was the case
为什么B中的it 就不对了呢？
和上面第49有什么区别？？

shiwen66666

ding

lpdeng

PREP2-96
There are hopeful signs that we are shifting away from our heavy reliance on fossil fuels:  more than ten times as much energy is generated through wind power now than it was in 1990.

(A) generated through wind power now
   than it was
(B) generated through wind power now
   as it was
(C) generated through wind power now
   as as the case
(D) now generated through wind power as it was
(E) now generated through wind power than was the case
为什么B中的it 就不对了呢？
和上面第49有什么区别？？

-- by 会员 shiwen66666 (2009/11/21 21:07:47)

我记得好像只有one和that才是指代前面的中心词。那么it就是指代前面的名词还包括修饰名词的词.

1) 这样这里的it就是指代 more than ten times as much energy。 意思明显不对。

2) prep2-49 A选项里面 it 指代 global economy。 还原后意思没有错误。

Since 1990 the global economy has grown more than “global economy” did during the 10,000 years from the beginning of agriculture to 1950.

3) prep2-49 e 选项里面的it 指代的是 The growth of the global economy since 1990。还原后意思不对

The growth of the global economy since 1990 exceeds what “The growth of the global economy since 1990”  did for the 10,000 years from the beginning of agriculture

不知道49 的e选项如果改成 The growth of the global economy since 1990 exceeds that during the 10,000 years from the beginning of agriculture to 1950 是不是 就对了？